Anatomy
Which cells signal the immune system of an infection that is present in the Epidermis
Langerhans Cells
What is the name of the star that was noticed by people around 3000 BC before the flood
Sirius
If it takes a kid 20 seconds to pull the sled 400 Newtons mters, what is the power
20 Watts
How is a rift valley formed
By the movement of the divergent plate
What are the two categories of metamorphic rocks
Foliated and Non-foliated
Which chemical is in the innermost layer or basal layer of the Epidermis
Melanin/Melanocytes
What type of lens does a refracting & reflecting telescope have
Convex & Concave
In metal atoms are there any electrons that are not strongly attracted to the nucleus.
Yes they are the ones that contribute towards electrical conductivity
What does the inner core of the earth consist of. Does the seismic waves speed up or slow down
Solid iron and nickel. The seismic waves speed up
What are the two main differences between Sugar and salt
Sugar has covalent/molecular bonding solid and is organic molecule. Salt has ionic bonding and is inorganic moelcule
Each nephron contains a cluster of capillaries called
Glomerulus
The dark colored flat regions on the moon are called
Maria
In a first class lever where is the fulcrum located. What are the examples of a first class lever
Fulcrum between the effort and resistance forces. Examples: Crowbars, Scissors, pliers
What is the viscous layer between the outer core and crust of the earth. What is the percent of earths mass does this layer consist
Mantle, 67%
What are Graptolites
Fossils of small marine animals. THey contain only carbon
What is the cup shaped sac that surrounds the glomerules
Bowman's capsules
When the moon is between the earth and sun, it is called a
New Moon
How is the mechanical advantage of the screw calculated
The crust and the mantle togther forms the
Lithosphere
What are coprolites
Fosslized excrement
The alveoli in the lungs enlarge, reducing air exchange, so less oxygen moves through the bloodstream. This causes shortness of breath. WHat is this condition called
Emphysema
The lowest layer of the sun's atmosphere and the layer from which light is given off is
Photosphere
What is Pascals law
A change in the pressure applied to a fluid is transmitted equally to every point of the fluid and to the walls of the container
Who proposed that continental drift
Alfred Wegner
What is the principle of superposition
Oldest rock layer is at the bottom and progressively younger are towards the top